Craft brewers tend to not be as cutthroat competing with one another as a lot of other businesses. Most believe that the sale of one craft beer helps the sales of all other good beer, too. But that ethos doesn’t necessarily extend to sports. Case in point, the 2010 World Series between the San Francisco Giants and the Texas Rangers.

Shaun O’Sullivan, from the 21st Amendment Brewery in San Francisco — in fact just a stone’s throw from the ballpark where the World Series be played — got a call today from his friend and colleague Fritz Rahr, who owns Rahr & Sons Brewing in Fort Worth, Texas, proposing a friendly wager on this year’s World Series.

So here’s the bet, as told by Shaun O’Sullivan on the 21st Amendment website in a post entitled It’s On Like Donkey Kong:

If the Texas Rangers win the World Series (highly unlikely in my opinion, but I digress), I will wear a Texas Ranger’s shirt, drinking a Rahr and Sons delicious beer outside of San Francisco’s AT&T Park. And when the San Francisco Giants beat the Texas Rangers (they will), Fritz will be wearing a Giants shirt and drinking a 21st Amendment delicious canned craft beer outside of Arlington Field.

I can’t wait to see those photos. Just one more reason to cheer on the Giants. Though I confess that Rahr makes some outstanding beers and it would be nice to taste a few of them during the series, I think for now I’ll stick to Bay Area beers to root for San Francisco beginning this Wednesday. What will you be drinking during the ball games?